GeForce 945A vs Iris Pro Graphics 580

If you are going to buy a new graphics card and are choosing between GeForce 945A and Iris Pro Graphics 580, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 945A stacks up against Iris Pro Graphics 580, check out specs charts below.

Iris Pro Graphics 580 is a Laptop Graphics Card

Note: Iris Pro Graphics 580 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Iris Pro Graphics 580 here:

Main Specs

  GeForce 945A Iris Pro Graphics 580
Power consumption (TDP) 33 Watt 15 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x1
Memory type GDDR5 DDR3L/LPDDR3/DDR4
Maximum RAM amount 1 GB 64 GB
Display Connectors No outputs No outputs
  Check Price
  • GeForce 945A has 120% more power consumption, than Iris Pro Graphics 580.
  • GeForce 945A is connected by PCIe 3.0 x8, and Iris Pro Graphics 580 uses PCIe 3.0 x1 interface.
  • Iris Pro Graphics 580 has 63 GB more memory, than GeForce 945A.
  • GeForce 945A is used in Desktops, and Iris Pro Graphics 580 - in Laptops.
  • GeForce 945A is build with Maxwell architecture, and Iris Pro Graphics 580 - with Gen. 9 Skylake.
  • Core clock speed of GeForce 945A is 722 MHz higher, than Iris Pro Graphics 580.
  • GeForce 945A is manufactured by 28 nm process technology, and Iris Pro Graphics 580 - by 14 nm process technology.

Game benchmarks

high / 1080p 9−10 9−10
ultra / 1080p 5−6 5−6
QHD / 1440p 0−1 0−1
low / 720p 20−22 20−22
medium / 1080p 10−12 10−12
GeForce 945A and Iris Pro Graphics 580 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce 945A Iris Pro Graphics 580
Architecture Maxwell Gen. 9 Skylake
Code name GM108 Skylake GT4e
Type Desktop Laptop
Release date 13 March 2015 1 September 2015
Pipelines 384 72
Core clock speed 1072 MHz 350 MHz
Boost Clock 1189 MHz 1050 MHz
Transistor count 189 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 28.54 72.00
Floating-point performance 903.2 gflops
Memory bus width 64 Bit
Memory clock speed 5012 MHz
Memory bandwidth 40.1 GB/s
Shared memory +
DirectX 12 (11_0) 12 (12_1)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.1
Vulkan 1.1.126 1.1.97
CUDA 5.0
Bitcoin / BTC (SHA256) 108 Mh/s
Quick Sync +
  Check Price